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I'm getting this error:

java.lang.ClassCastException: java.net.URL cannot be cast to java.lang.CharSequence
at org.codehaus.groovy.runtime.dgm$948.doMethodInvoke(Unknown Source)>
at org.codehaus.groovy.reflection.GeneratedMetaMethod$Proxy.doMethodInvoke(GeneratedMetaMethod.java:70)
at org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:73)
at org.codehaus.groovy.runtime.callsite.GetEffectivePojoPropertySite.getProperty(GetEffectivePojoPropertySite.java:61)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:227)
at ch.qos.logback.classic.gaffer.GafferConfigurator.run(GafferConfigurator.groovy:44)
at ch.qos.logback.classic.gaffer.GafferUtil.runGafferConfiguratorOn(GafferUtil.java:43)
at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:66)
at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:150)
at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:85)
at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)
at org.slf4j.LoggerFactory.bind(LoggerFactory.java:142)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:121)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:332)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:284)
at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:155)
at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:132)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:655)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:282)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4728)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5162)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

when trying to start Tomcat 8 using Logback 1.1.2 and Groovy 2.3.6/Java 8. The URL for the logback.groovy file is coming from a shared jar and looks correct when debugging: jar:file:/Users/matt.whipple/.gradle/caches/modules-2/files-2.1/com.example/core/1.0.0-SNAPSHOT/c30ff0f9caae010d728248c66cc55f40bf591232/core-1.0.0-SNAPSHOT.jar!/logback.groovy

The issue seems to be with the call to url.text in the GDK. It appears as though this is an issue with this version of Groovy. If in the debugger I try alternate methods to fetch the contents of the URL I get similar ClassCastExceptions, but updating to Groovy 2.4.1 resolves the issue.

Matt Whipple
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  • Looks like something isn't calling `url.text` and is just passing the url? – tim_yates Mar 06 '15 at 15:53
  • `url.text` is being called as part of: https://github.com/qos-ch/logback/blob/master/logback-classic/src/main/groovy/ch/qos/logback/classic/gaffer/GafferConfigurator.groovy which is where the error is being thrown. Setting a breakpoint there and doing alternate approaches like url.openStream.text or url.openStream.eachLine{...} also throw ClassCastExceptions. I'm guessing the Groovy typing system is getting waylaid somewhere. – Matt Whipple Mar 06 '15 at 15:56

0 Answers0